class OasRails::OasRoute

def self.new_from_rails_route(rails_route: ActionDispatch::Journey::Route)
  instance = new
  instance.rails_route = rails_route
  instance.extract_rails_route_data
  instance
end

def controller_path_extractor(controller)
  Rails.root.join("app/controllers/#{controller}_controller.rb").to_s
end

def extract_docstring
  ::YARD::Docstring.parser.parse(
    controller_class.constantize.instance_method(method).comment.lines.map { |line| line.sub(/^#\s*/, '') }.join
  ).to_docstring
end

def extract_rails_route_data
  @controller_action = "#{@rails_route.defaults[:controller].camelize}Controller##{@rails_route.defaults[:action]}"
  @controller_class = "#{@rails_route.defaults[:controller].camelize}Controller"
  @controller = @rails_route.defaults[:controller]
  @controller_path = controller_path_extractor(@rails_route.defaults[:controller])
  @method = @rails_route.defaults[:action]
  @verb = @rails_route.verb
  @path = Extractors::RouteExtractor.clean_route(@rails_route.path.spec.to_s)
  @docstring = extract_docstring
  @source_string = extract_source_string
end

def extract_source_string
  @controller_class.constantize.instance_method(method).source
end

def initialize; end

def path_params
  @rails_route.path.spec.to_s.scan(/:(\w+)/).flatten.reject! { |e| e == 'format' }
end